Home / 693,385.20-1,040,423.40-394,095.60

Finding the Fourth Proportional to 693,385.20, 1,040,423.40 and 394,095.60

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Solution

The fourth proportional to 693,385.20, 1,040,423.40 and 394,095.60 is: 591,339.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,385.20 : 1,040,423.40 = 394,095.60 : x
  2. Step 2: Convert to fraction form
    693,385.20/1,040,423.40 = 394,095.60/x
  3. Step 3: Cross multiply
    693,385.20x = 1,040,423.40 × 394,095.60
  4. Step 4: Simplify right side
    693,385.20x = 410,026,284,077.04
  5. Step 5: Solve for x
    x = 410,026,284,077.04/693,385.20
  6. Step 6: Final answer
    x = 591,339.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.